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The missing or altered X chromosome of Turner syndrome causes errors during fetal development and other developmental problems after birth â short stature, ovarian failure and learning disabilities. Physical characteristics and health complications that arise from the chromosomal error vary greatly.
Turner syndrome occurs due to the nondisjunction of the sex chromosomes during meiosis. It is a monosomy of the X sex chromosome. The affected individual has 45 chromosomes with only one X chromosome. The sex genotype is XO. Refer to the following site to learn about the effects of Turner syndrome.